Update main.workflow

Author: Dylan Pinn

.github/main.workflow

@@ -0,0 +1,9 @@
+workflow "New workflow" {
+  on = "push"
+  resolves = ["GitHub Action for Docker"]
+}
+
+action "GitHub Action for Docker" {
+  uses = "actions/docker/cli@c08a5fc9e0286844156fefff2c141072048141f6"
+  runs = "docker build ."
+}